Bump libtool revision
diff --git a/configure.ac b/configure.ac
index 4b631bd..7106aa3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -42,11 +42,11 @@
dnl bump revision when fixing bugs
dnl bump current and age, reset revision to zero when adding APIs
dnl bump current, leave age, reset revision to zero when changing/removing APIS
-LIBT_CURRENT=8
+LIBT_CURRENT=9
LIBT_REVISION=0
AC_SUBST(LIBT_CURRENT)
AC_SUBST(LIBT_REVISION)
-LIBT_AGE=7
+LIBT_AGE=8
LIBT_VERSION_INFO="$LIBT_CURRENT:$LIBT_REVISION:$LIBT_AGE"
AC_SUBST(LIBT_VERSION_INFO)
